Question

11. Check by the method of dimensions whether the
following equations are correct:
1) E = mc²
2) T=2π√l/g
3) V= √p/p, where v=velocity of sound, p=pressure and p=density of medium.
4) V=1÷2l√T/m, where v=frequency of vibration, l=length of string, T=tension in the string and m=mass per unit length.​

Answer 1

Answer:

(i)t=2π√lg , (ii)v=√PD where v= velocity of sound P=pressure D=density of medium . (iii)n=1 2